In 1998, SBS ordered
20 Trident chassis from Dennis, UK. However, the orders arrived late due to
overwhelming demand from the Hong Kong bus companies, and together with
the the late arrival of Duple
Metsec body kits, the assembly of the 20 Trident buses were delayed. These buses
finally appeared on the roads in Singapore in August 2001, some three years
after they were initially ordered.

All the 20 Tridents are
based at Hougang Depot. Tridents were initially deployed on services 51, 64, 85,
111, 501 and 502 before having their deployment being reshuffled after second
phase of the Northeast Line rationalisation exercise. Tridents can now be found
on services 51, 62, 64, 80, 89 and 165.